Labels:text | cartoon OCR: ~ PRINCIPLES OF SCIENCE- ELECTROMAGNETISM LECTRICITY AND MAGNETISM are Eclosely linked. An electric current always produces a magnetic field, and a changing ELECTRICITY magnetic field always produces an electric current. SUPPLY Often, this electromagnetic effect passes unnoticed Electromagnetic because it is very weak. But in the operation of Waves many machines, the effect is invaluable. COIL OF ELECTROMAGNET IRON CORE WIRE Electromagnetic Effects Related Machines
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